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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10520162 B1

PDFFull Text
Date of Patent:
Dec. 31, 2019

Filed:

Apr. 11, 2018

Illumination device

Applicant:

Fujifilm Corporation, Tokyo, JP;

Inventors:

Samito Nakamura, Tokyo, JP;

Hiromi Takenoshita, Tokyo, JP;

Daisaku Abiru, Tokyo, JP;

Assignee:

FUJIFILM Corporation, Tokyo, JP;

Attorney:

Studebaker & Brackett PC

Primary Examiner:

Alexander K Garlen

Assistant Examiner:

Eric T Eide

Int. Cl.
CPC ...
F21S 43/14 (2018.01); F21S 43/20 (2018.01); F21V 5/04 (2006.01); F21V 5/00 (2018.01); G02B 3/00 (2006.01); G02B 5/02 (2006.01); F21Y 115/10 (2016.01); G02B 27/60 (2006.01); H01L 33/58 (2010.01); G02B 19/00 (2006.01);
U.S. Cl.
CPC ...
F21V 5/048 (2013.01); F21S 43/14 (2018.01); F21S 43/26 (2018.01); F21V 5/004 (2013.01); F21V 5/008 (2013.01); G02B 3/005 (2013.01); G02B 3/0062 (2013.01); G02B 5/0215 (2013.01); G02B 5/0278 (2013.01); F21Y 2115/10 (2016.08); G02B 19/0014 (2013.01); G02B 19/0061 (2013.01); G02B 27/60 (2013.01); H01L 33/58 (2013.01);
Abstract

Provided is a high-decorativeness illumination device that utilizes lenticular lens sheets. An illumination device includes first to third lenticular lens sheets, an LED light source, and a casing. The first and second lenticular lens sheets are laminated such that an angle formed by plano-convex cylindrical lenses falls within a first angle range which is greater than 0 degrees and is less than 30 degrees. Accordingly, moire fringes appear in illumination light rays. The third lenticular lens sheet is laminated on the first and second lenticular lens sheets such that angles formed by plano-convex cylindrical lenses fall within a second angle range which is equal to or greater than 30 degrees and is equal to or less than 90 degrees.

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